INDEX dioxin

Besides the applications of the electrophilicity index mentioned in the review article [40], following recent applications and developments have been observed, including relationship between basicity and nucleophilicity [64], 3D-quantitative structure activity analysis [65], Quantitative Structure-Toxicity Relationship (QSTR) [66], redox potential [67,68], Woodward-Hoffmann rules [69], Michael-type reactions [70], Sn2 reactions [71], multiphilic descriptions [72], etc. Molecular systems include silylenes [73], heterocyclohexanones [74], pyrido-di-indoles [65], bipyridine [75], aromatic and heterocyclic sulfonamides [76], substituted nitrenes and phosphi-nidenes [77], first-row transition metal ions [67], triruthenium ring core structures [78], benzhydryl derivatives [79], multivalent superatoms [80], nitrobenzodifuroxan [70], dialkylpyridinium ions [81], dioxins [82], arsenosugars and thioarsenicals [83], dynamic properties of clusters and nanostructures [84], porphyrin compounds [85-87], and so on. 

Chatteijee, A., Iwasaki, T., and Ebina, T. 2002. 2 1 Dioctahedral smectites a selective sorbent for dioxins and furans—a reactivity index study. J. Phys. Chem. A. 106 641-648. 

Chatteijee, A., Onodera, Y., Ebina, T., and Mizukami, F. 2003. 2,3,7,8-tetrachloro dibenzo-p-dioxin can be successfully decomposed over 2 1 dioctahedral smectite—a reactivity index study. J. Mol. Graphics Model. 22 93-104. 

Notes B1 = survey on the actual condition of chemical substances in the environment (until 2001) B2 = survey on the actual condition of chemical substances in the environment (after 2002) D = survey under the Law concerning Special Measures against Dioxins E = survey on the environmental endocrine disrupters W = survey under the Water Pollution Control Law A = the air pollutants monitoring O = other survey. Details of the survey on the actual condition of chemical substances in the environment refer to Ministry of the Environment web site http // www.env.go.jp/chemi/kurchen/index.html (also refer to annual reports before FY1996). 

Kawamoto, K. 1999. TOX as a novel alternative index of dioxins in flue gas. Organohalogen Compd. 40 157-160. 

Wang, Y.H., Wong, P.K. (2002) Mathematical relationships between vapor pressure, water solubility, Henry s law constant, n-octanol/water partition coefficient and gas chromatographic retention index of polychlorinated-dibenzo-dioxins. Water Res. 36, 350-355. 

TEF Toxicity equivalency factor. Ratio of the toxicity of a chemical to that of another structurally related chemical (or index compound) chosen as a reference. TEFs are toxicity potency factors used to evaluate the toxicities of highly variable mixtures of dioxin-like compounds. The most toxic members, 2,3,7,8-TCDD and 1,2,3,7,8-pentachlorodibenzo-p-dioxin, are... 

Donnelly JR, Munslow WD, Mitchum RK, Sovocool GW (1987), J. Chromat. 392 51-63. Cor-relation of structure with retention index for chlorinated dibenzo-p-dioxins ... 

Donnelly JR, Sovocool GW (1992), Chemosphere 25 1299-1304. Gas chromatographic elution order and elution shift modelling for isomer specific analysis of halogenated dioxins" Donnelly JR, Munslow WD, Grange AH Pettit TL, Simmons RD, Sovocool GW (1991a), J. Chromat. 540 293-310. Correlation of structure with linear retention index for bromo- and bromochlorodibenzo-p-dioxins and bromodibenzofurans"... 

Index Chemical Chemical selected as the basis for standardization of toxicity of components in a chemical class (e.g., 2,3,7,8-tetrachlorodibenzo-p-dioxin [TCDD] for the assessment of dioxin-like compounds benzo[a]pyrene for the assessment of carcinogenic polycyclic aromatic hydrocarbons [PAHs]). 

For the dioxin binder screening, some changes were made as shown in Fig. 8.6. A new pentapeptide library was prepared because a strong affinity is required, to detect dioxins at the ppb level. The design of the screening solution is very important since it determines which peptides can be screened. Also, the composition of the screening solution may restrict the detection conditions of the sensor. For the herbicide binder screening, ethanol was used to dissolve the herbicide in an aqueous buffer. The refractive index of ethanol (1.3623) is not very different from that of water (1.3335) therefore, the ethanol-based buffer solution could be used in the... 

Figure 1 Effects of Chlorella diet on fecal excretion amounts of polychlorinated dibenzo-p-dioxin (PCDD) and polychlorinated dibenzofuran (PCDF) congeners in contaminated rice oil-fed rats. Values are means SD, n=4. Vhlues of acceleration index of fecal excretion amounts of PCDD and PCDF congeners due to Chlorella diet were calculated using the following equation Acceleration index of fecal excretion amounts of PCDD...

DIoxyethylene ether Ethylene glycol ethylene ether Glycol ethylene ether Tetrahydro-1,4-dioxin Tetrahydro-p-dioxin Classification Sat. cyclic aliphatic ether Empirical C4H8O2 Formula OCH2CH2OCH2CH2 Properties Colorless clear liq., ethereal odor stable sol. in water, most org. soivs. m.w. 88.11 sp.gr. 1.0356 (20/20 C) f.p. 10-12 C b.p. 101.3 C flash pt. 18.3 C autoignition temp. 180 C ref. index 1.4220... 

Tuomisto J, Vartiainen T, Tuomisto JT (1999), Synopsis on Dioxins and PCBs, KTL (National Public Health Institute, Finland), Division of Environmental Health, Kuopio, Finland [freely available at http //www.ktlTi/dioxin/index.html]. 

The Index Terms - called Subject Index SI - record only the Registry Number along with the substance. General expressions like dioxine are not fully searchable, unless every single Registry Number is laboriously found and entered in the search strategy one by one. 

After accessing the RTECS file (Figure 11), the name fragments common to each name listed in the CHEMLINE search (DIBENZO and DIOXIN) and the formula fragment CL are used to retrieve six records. The RTECS Toxicity Data fields (IX) are then searched for the terms ORAL, RAT and TERATOGENIC and the records containing these terms in the index string are Intersected with Search Statement 1 to retrieve two records (Search Statement 2). 

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